load shedding

Short definition from Wiktionary

Noun

1. 1
   The process by which an electric utility cuts power to some customers in response to a shortage of available electricity.
2. 2
   The process of minimizing usage of electrical power by powering down nonessential equipment following an electrical generation failure, or to reduce the risk of an electrical fire in certain situations.
3. 3
   The postponement of payment of less important bills because of financial problems.
4. 4
   Alternative form of load shedding.